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<title>Construct a new ZMQContext object</title>
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<h1 class="refname">ZMQContext::__construct</h1>
<p class="verinfo">(PECL zmq >= 0.5.0)</p><p class="refpurpose"><span class="refname">ZMQContext::__construct</span> — <span class="dc-title">Construct a new ZMQContext object</span></p>
</div>
<div class="refsect1 description" id="refsect1-zmqcontext.construct-description">
<h3 class="title">Description</h3>
<div class="methodsynopsis dc-description">
<span class="methodname"><strong>ZMQContext::__construct</strong></span>
([ <span class="methodparam"><span class="type">integer</span> <code class="parameter">$io_threads</code><span class="initializer"> = 1</span></span>
[, <span class="methodparam"><span class="type">boolean</span> <code class="parameter">$is_persistent</code><span class="initializer"> = true</span></span>
]] )</div>
<p class="para rdfs-comment">
Constructs a new ZMQ context. The context is used to initialize sockets. A persistent context is required
to initialize persistent sockets.
</p>
</div>
<div class="refsect1 parameters" id="refsect1-zmqcontext.construct-parameters">
<h3 class="title">Parameters</h3>
<p class="para">
<dl>
<dt>
<span class="term"><em><code class="parameter">io_threads</code></em></span>
<dd>
<p class="para">
Number of io-threads in the context.
</p>
</dd>
</dt>
<dt>
<span class="term"><em><code class="parameter">is_persistent</code></em></span>
<dd>
<p class="para">
Whether the context is persistent. Persistent context is stored
over multiple requests and is a requirement for persistent sockets.
</p>
</dd>
</dt>
</dl>
</p>
</div>
<div class="refsect1 examples" id="refsect1-zmqcontext.construct-examples">
<h3 class="title">Examples</h3>
<p class="para">
<div class="example" id="example-4694">
<p><strong>Example #1 A <span class="function"><strong>ZMQContext()</strong></span> example</strong></p>
<div class="example-contents"><p>
Construct a new context and allocate request socket from it
</p></div>
<div class="example-contents">
<div class="phpcode"><code><span style="color: #000000">
<span style="color: #0000BB"><?php<br /></span><span style="color: #FF8000">/* Allocate a new context */<br /></span><span style="color: #0000BB">$context </span><span style="color: #007700">= new </span><span style="color: #0000BB">ZMQContext</span><span style="color: #007700">();<br /><br /></span><span style="color: #FF8000">/* Create a new socket */<br /></span><span style="color: #0000BB">$socket </span><span style="color: #007700">= </span><span style="color: #0000BB">$context</span><span style="color: #007700">-></span><span style="color: #0000BB">getSocket</span><span style="color: #007700">(</span><span style="color: #0000BB">ZMQ</span><span style="color: #007700">::</span><span style="color: #0000BB">SOCKET_REQ</span><span style="color: #007700">, </span><span style="color: #DD0000">'my sock'</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">/* Connect the socket */<br /></span><span style="color: #0000BB">$socket</span><span style="color: #007700">-></span><span style="color: #0000BB">connect</span><span style="color: #007700">(</span><span style="color: #DD0000">"tcp://example.com:1234"</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">/* Send a request */<br /></span><span style="color: #0000BB">$socket</span><span style="color: #007700">-></span><span style="color: #0000BB">send</span><span style="color: #007700">(</span><span style="color: #DD0000">"Hello there"</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">/* Receive back the response */<br /></span><span style="color: #0000BB">$message </span><span style="color: #007700">= </span><span style="color: #0000BB">$socket</span><span style="color: #007700">-></span><span style="color: #0000BB">recv</span><span style="color: #007700">();<br /></span><span style="color: #0000BB">?></span>
</span>
</code></div>
</div>
</div>
</p>
</div>
<div class="refsect1 returnvalues" id="refsect1-zmqcontext.construct-returnvalues">
<h3 class="title">Return Values</h3>
<p class="para">
Throws ZMQContextException if context initialization fails.
</p>
</div>
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